SanDisk Corporation has announced the 4 Gigabyte (GB) SanDisk Ultra II Memory Stick PRO Duo card. The addition of this card to its high-speed SanDisk Ultra II line of flash memory cards represents a doubling of its highest capacity card in this card format.

The Ultra II cards are primarily targeted to advanced digital photographers with high-resolution digital cameras that require fast, large-capacity digital film cards to quickly shoot many high resolution images.

Each SanDisk Ultra II card features a minimum write speed of 9 megabytes per second (MB/sec.) and a minimum read speed of 10MB/sec. These fast write speeds are designed to take advantage of advanced digital camera features such as rapid fire, continuous-shooting modes or to capture digital video clips.

The SanDisk Ultra II Memory Stick PRO Duo comes in models ranging from 512MB to 2GB, and the 4GB model will be available in March 2006, with an expected retail price of US$239.99.